./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark02_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceb00bb-a842-4480-a813-550bd723deda/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceb00bb-a842-4480-a813-550bd723deda/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceb00bb-a842-4480-a813-550bd723deda/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceb00bb-a842-4480-a813-550bd723deda/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark02_linear.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceb00bb-a842-4480-a813-550bd723deda/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceb00bb-a842-4480-a813-550bd723deda/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a49557d960d757ebc59691c53a34969948d685fd24f146c763d0c70a84ed86eb ............................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:02:24,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:02:24,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:02:24,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:02:24,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:02:24,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:02:24,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:02:24,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:02:24,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:02:24,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:02:24,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:02:24,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:02:24,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:02:24,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:02:24,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:02:24,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:02:24,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:02:24,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:02:24,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:02:24,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:02:24,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:02:24,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:02:24,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:02:24,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:02:24,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:02:24,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:02:24,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:02:24,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:02:24,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:02:24,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:02:24,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:02:24,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:02:24,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:02:24,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:02:24,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:02:24,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:02:24,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:02:24,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:02:24,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:02:24,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:02:24,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:02:24,809 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceb00bb-a842-4480-a813-550bd723deda/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:02:24,835 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:02:24,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:02:24,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:02:24,836 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:02:24,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:02:24,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:02:24,837 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:02:24,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:02:24,838 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:02:24,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:02:24,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:02:24,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:02:24,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:02:24,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:02:24,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:02:24,839 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:02:24,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:02:24,840 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:02:24,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:02:24,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:02:24,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:02:24,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:02:24,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:02:24,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:02:24,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:02:24,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:02:24,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:02:24,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:02:24,842 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:02:24,842 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:02:24,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:02:24,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:02:24,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceb00bb-a842-4480-a813-550bd723deda/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceb00bb-a842-4480-a813-550bd723deda/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a49557d960d757ebc59691c53a34969948d685fd24f146c763d0c70a84ed86eb [2021-10-21 19:02:25,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:02:25,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:02:25,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:02:25,132 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:02:25,133 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:02:25,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceb00bb-a842-4480-a813-550bd723deda/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/loop-zilu/benchmark02_linear.i [2021-10-21 19:02:25,239 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceb00bb-a842-4480-a813-550bd723deda/bin/uautomizer-j4sWxH34Be/data/f1b74b216/c7c49c5e46b34deb96caef2168de9902/FLAG94ecb1ca6 [2021-10-21 19:02:25,686 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:02:25,687 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceb00bb-a842-4480-a813-550bd723deda/sv-benchmarks/c/loop-zilu/benchmark02_linear.i [2021-10-21 19:02:25,693 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceb00bb-a842-4480-a813-550bd723deda/bin/uautomizer-j4sWxH34Be/data/f1b74b216/c7c49c5e46b34deb96caef2168de9902/FLAG94ecb1ca6 [2021-10-21 19:02:26,069 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceb00bb-a842-4480-a813-550bd723deda/bin/uautomizer-j4sWxH34Be/data/f1b74b216/c7c49c5e46b34deb96caef2168de9902 [2021-10-21 19:02:26,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:02:26,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:02:26,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:02:26,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:02:26,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:02:26,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:02:26" (1/1) ... [2021-10-21 19:02:26,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20c88881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:26, skipping insertion in model container [2021-10-21 19:02:26,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:02:26" (1/1) ... [2021-10-21 19:02:26,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:02:26,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:02:26,323 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceb00bb-a842-4480-a813-550bd723deda/sv-benchmarks/c/loop-zilu/benchmark02_linear.i[868,881] [2021-10-21 19:02:26,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:02:26,352 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:02:26,371 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceb00bb-a842-4480-a813-550bd723deda/sv-benchmarks/c/loop-zilu/benchmark02_linear.i[868,881] [2021-10-21 19:02:26,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:02:26,387 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:02:26,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:26 WrapperNode [2021-10-21 19:02:26,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:02:26,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:02:26,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:02:26,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:02:26,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:26" (1/1) ... [2021-10-21 19:02:26,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:26" (1/1) ... [2021-10-21 19:02:26,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:02:26,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:02:26,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:02:26,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:02:26,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:26" (1/1) ... [2021-10-21 19:02:26,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:26" (1/1) ... [2021-10-21 19:02:26,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:26" (1/1) ... [2021-10-21 19:02:26,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:26" (1/1) ... [2021-10-21 19:02:26,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:26" (1/1) ... [2021-10-21 19:02:26,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:26" (1/1) ... [2021-10-21 19:02:26,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:26" (1/1) ... [2021-10-21 19:02:26,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:02:26,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:02:26,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:02:26,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:02:26,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:26" (1/1) ... [2021-10-21 19:02:26,458 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:02:26,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceb00bb-a842-4480-a813-550bd723deda/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:02:26,478 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceb00bb-a842-4480-a813-550bd723deda/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:02:26,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceb00bb-a842-4480-a813-550bd723deda/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:02:26,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:02:26,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:02:26,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:02:26,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:02:26,710 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:02:26,710 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-21 19:02:26,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:02:26 BoogieIcfgContainer [2021-10-21 19:02:26,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:02:26,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:02:26,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:02:26,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:02:26,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:02:26" (1/3) ... [2021-10-21 19:02:26,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb520e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:02:26, skipping insertion in model container [2021-10-21 19:02:26,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:26" (2/3) ... [2021-10-21 19:02:26,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb520e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:02:26, skipping insertion in model container [2021-10-21 19:02:26,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:02:26" (3/3) ... [2021-10-21 19:02:26,743 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark02_linear.i [2021-10-21 19:02:26,749 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:02:26,751 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:02:26,826 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:02:26,833 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:02:26,833 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:02:26,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:26,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 19:02:26,862 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:02:26,862 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:02:26,863 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:02:26,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:02:26,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1807089479, now seen corresponding path program 1 times [2021-10-21 19:02:26,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:02:26,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127846041] [2021-10-21 19:02:26,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:02:26,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:02:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:02:27,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:02:27,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:02:27,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127846041] [2021-10-21 19:02:27,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127846041] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:02:27,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:02:27,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:02:27,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771093910] [2021-10-21 19:02:27,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:02:27,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:02:27,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:02:27,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:02:27,041 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:27,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:02:27,055 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-10-21 19:02:27,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:02:27,057 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-21 19:02:27,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:02:27,065 INFO L225 Difference]: With dead ends: 20 [2021-10-21 19:02:27,065 INFO L226 Difference]: Without dead ends: 8 [2021-10-21 19:02:27,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:02:27,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-21 19:02:27,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-21 19:02:27,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:27,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-21 19:02:27,106 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2021-10-21 19:02:27,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:02:27,107 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-21 19:02:27,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:27,107 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-21 19:02:27,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 19:02:27,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:02:27,108 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:02:27,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:02:27,109 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:02:27,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:02:27,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1806970315, now seen corresponding path program 1 times [2021-10-21 19:02:27,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:02:27,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476964927] [2021-10-21 19:02:27,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:02:27,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:02:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:02:27,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:02:27,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:02:27,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476964927] [2021-10-21 19:02:27,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476964927] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:02:27,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:02:27,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:02:27,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27879686] [2021-10-21 19:02:27,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:02:27,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:02:27,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:02:27,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:02:27,273 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:27,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:02:27,302 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2021-10-21 19:02:27,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:02:27,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-21 19:02:27,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:02:27,304 INFO L225 Difference]: With dead ends: 8 [2021-10-21 19:02:27,304 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:02:27,305 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:02:27,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:02:27,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:02:27,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:27,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:02:27,308 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-10-21 19:02:27,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:02:27,309 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:02:27,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:27,309 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:02:27,310 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:02:27,313 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:02:27,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:02:27,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:02:27,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:02:27,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:02:27,332 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 19:02:27,333 INFO L860 garLoopResultBuilder]: At program point L29(lines 19 30) the Hoare annotation is: true [2021-10-21 19:02:27,333 INFO L853 garLoopResultBuilder]: At program point L25-2(lines 25 27) the Hoare annotation is: (< 0 ULTIMATE.start_main_~l~0) [2021-10-21 19:02:27,333 INFO L857 garLoopResultBuilder]: For program point L25-3(lines 25 27) no Hoare annotation was computed. [2021-10-21 19:02:27,334 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-10-21 19:02:27,334 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 19:02:27,335 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 19:02:27,335 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 19:02:27,336 INFO L857 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2021-10-21 19:02:27,339 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-10-21 19:02:27,340 INFO L857 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-21 19:02:27,340 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-10-21 19:02:27,345 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:02:27,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:02:27 BoogieIcfgContainer [2021-10-21 19:02:27,365 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:02:27,366 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:02:27,366 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:02:27,366 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:02:27,373 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:02:26" (3/4) ... [2021-10-21 19:02:27,376 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:02:27,391 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-21 19:02:27,392 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:02:27,392 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:02:27,392 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:02:27,442 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceb00bb-a842-4480-a813-550bd723deda/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:02:27,442 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:02:27,444 INFO L168 Benchmark]: Toolchain (without parser) took 1369.75 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 58.8 MB in the beginning and 91.7 MB in the end (delta: -32.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:02:27,444 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 92.3 MB. Free memory is still 48.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:02:27,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.44 ms. Allocated memory is still 92.3 MB. Free memory was 58.6 MB in the beginning and 67.7 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:02:27,446 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.69 ms. Allocated memory is still 92.3 MB. Free memory was 67.7 MB in the beginning and 66.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:02:27,448 INFO L168 Benchmark]: Boogie Preprocessor took 19.42 ms. Allocated memory is still 92.3 MB. Free memory was 66.3 MB in the beginning and 65.3 MB in the end (delta: 975.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:02:27,452 INFO L168 Benchmark]: RCFGBuilder took 286.07 ms. Allocated memory is still 92.3 MB. Free memory was 65.2 MB in the beginning and 56.5 MB in the end (delta: 8.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:02:27,452 INFO L168 Benchmark]: TraceAbstraction took 636.91 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 55.8 MB in the beginning and 93.8 MB in the end (delta: -38.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:02:27,453 INFO L168 Benchmark]: Witness Printer took 76.33 ms. Allocated memory is still 123.7 MB. Free memory was 93.8 MB in the beginning and 91.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:02:27,455 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 92.3 MB. Free memory is still 48.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 310.44 ms. Allocated memory is still 92.3 MB. Free memory was 58.6 MB in the beginning and 67.7 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.69 ms. Allocated memory is still 92.3 MB. Free memory was 67.7 MB in the beginning and 66.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.42 ms. Allocated memory is still 92.3 MB. Free memory was 66.3 MB in the beginning and 65.3 MB in the end (delta: 975.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 286.07 ms. Allocated memory is still 92.3 MB. Free memory was 65.2 MB in the beginning and 56.5 MB in the end (delta: 8.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 636.91 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 55.8 MB in the beginning and 93.8 MB in the end (delta: -38.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 76.33 ms. Allocated memory is still 123.7 MB. Free memory was 93.8 MB in the beginning and 91.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 530.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.3ms, AutomataDifference: 79.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 17.3ms, InitialAbstractionConstructionTime: 18.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18 SDtfs, 2 SDslu, 6 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 24.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 4 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 5.6ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 5.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 9.5ms SsaConstructionTime, 60.8ms SatisfiabilityAnalysisTime, 162.4ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 0 < l - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-21 19:02:27,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ceb00bb-a842-4480-a813-550bd723deda/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...